Bio
Dr. Matt Beidler is an R&D Staff Scientist in the Fusion Theory and Modeling Group at Oak Ridge National Laboratory (ORNL). His work is dedicated to solving the complex physics challenges required to harness fusion energy—the same process that powers the sun—to create a clean, sustainable energy source on Earth.
Focus & Impact: Making Fusion Energy a Reality
Dr. Beidler’s primary research focuses on ensuring the operational safety and reliability of next-generation fusion reactors, particularly the global ITER experiment and future commercial designs.
His work centers on the theoretical and computational modeling of extremely hot, magnetically confined plasmas within a device called a tokamak. A critical challenge in fusion is preventing and managing disruptions—abrupt and potentially damaging instabilities in the plasma.
Mitigation System Design: He is a recipient of an Office of Science Early Career Award, developing a cutting-edge hybrid computational code that combines magnetohydrodynamic (MHD) and particle-based kinetic models. This code is used to self-consistently optimize and validate the disruption and runaway electron mitigation systems planned for ITER.
National Leadership: He is a key leader in the new Fusion Innovation Research Engine (FIRE) collaborative on Mitigating Risks from Abrupt Confinement Loss (MiRACL), where he leads the topical area on assessing runaway electron damage.
Multiphysics Simulations: Dr. Beidler is also exploring the resilience of the reactor's physical components, such as fusion breeding blankets, to disruptive events. He was awarded ORNL LDRD funds to develop a high-fidelity plasma module within the VERTEX multiphysics framework, enabling advanced plasma-engineering simulations.
Scientific Expertise & Background
Dr. Beidler joined ORNL in 2018. Before this, he was a Postdoctoral Research Associate at the University of Wisconsin-Madison, including an appointment through the DOE Fusion Energy Sciences Postdoctoral Research Program. Before that, he was a Graduate Research Assistant at West Virginia University.
His graduate and postdoctoral research used MHD models to study magnetic reconnection—spontaneous or forced changes in the magnetic field configuration within tokamaks—which can lead to rapid shifts in plasma confinement and precipitate disruptive events.
Community Service & Leadership
A dedicated member of the national and international fusion community, Dr. Beidler plays a significant role in coordinating research efforts:
He leads the Disruption Mitigation topical group at ORNL, uniting engineering, experimental, and modeling researchers within the Fusion Energy Division.
He is an active expert in the International Tokamak Physics Activity (ITPA) topical groups.
He currently represents ORNL on the Theory Coordination Committee, which promotes dialogue among researchers, the Department of Energy (DOE), and the emerging private fusion sector.
He recently chaired the Sherwood Fusion Theory Executive Committee and hosted the 2023 conference in Knoxville, TN.
Dr. Beidler completed his Ph.D. (2015) and M.S. (2011) in plasma physics at West Virginia University, and his B.S. (2008) at Johns Hopkins University.